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Ladd, H. S. (1966). Chitons and gastropods (Haliotidae through Adeorbidae) from the western Pacific Ocean. Geological Survey Professional Paper. 531: ii + 98 pp., 16 pls.
Ladd, H. S. (1966). Chitons and gastropods (Haliotidae through Adeorbidae) from the western Pacific Ocean. Geological Survey Professional Paper. 531: ii + 98 pp., 16 pls.